Jointed extensible rod



Patented Mar. 20, 11923..

UNHTED STATES satana kGEORGIE? F. B/UHL, F TROY, NEW YORK.

J'OINTED EXTENSIBLE ROD.

Application led August 4, 1921. Serial No. 489,811.

To all whom t may concern:

Be it known that l, GEORGE F. RUi-IL, a citizen of the United States, residing in the city of Troy and State of New York, have invented new and useul improvements in Jointed Extensible Rods, of which the tollowing is a specification, reference being' had to the accompanying drawings.

This invention is in the nat-ure of a` jointed extensible rod or pole, and the primary object is to provide a device ot this kind in a simple and practicable form, for use in window cleaning, or as a lishing rod, or tor any purpose where such an extensible rod would be et an advantage.

ln the drawings:

Fig. 1 is a longitudinal sectional View ot such a rod as described, the joints thereot being collapsed, or teleseoped together.

Fig. 2 is a similar view showing` the joints extended.

Figure 3 is a top plan View ot the rod, the joints being collapsed.

Fig. 4 is a bottom plan view.

Fig. 5 is a transverse section on the line I d-Ll in Figure 3.

rEhe invention lies in providing a number ot slotted. tubes as 1, 2, 3, oi. sizes adapted to neatly telescope successively one into the other and each having' a slot 7 extended ici-om end to end, but not cut out at the ends. Upon the telescoping` ends ot each joint are rigidly mounted rings 4, formed with lugs 5 and 6 which extend from the rings down into the slots 7 ot the tubes. The lun` 6 upon the primary or handle joint 1 is inclined inwardly` while the ring' at the end of the joint 23. or end joint` need carry no lug at all as there is no other joint to teles"ope therewith. These luns. slidingl along,y in the slots 7, hold the joints in alignment, and also prevent the joints being' pulled entirely apart, as the lug-s will impinge the tubes at the ends oi the slots 7 as the tubes are drawn out. The lug 6 is inclined inwardly as stated, in order that the twin cams 8 pivoted thereto may be carried entirely inside the tube. The cams 8 serve to lock all the tubes together in collapsed form. The tube 8 is provided at its inner end with a` notch 3 to enable it to straddle the lock 6 and be engaged by the cams 8. For this purpose they are pivoted at 9 one to each side of the lug 6, and a small lock bar 10 has one end pivoted at 11 between the free ends of the cams 8 and extends back within the handle tube l, its rear end passing slidingly through a stop 12 fixed in the end of the tube 1, while another stop 13 is mounted on the bar 10, spaced from the stop 12. An expandin` coil spring 14C is braced between these two stops, and serves to project the bar 10 forwardly, and to lock the cams S into eontatt with the tubes to hold them when shut together. A trigger 15 is 'fastened at 1G to the bar 1() and projects through a slot 17 in the tube 1. rlhus means are al'l'orded for readily manipulating the bar 1t). Flat spring" hooks 18 extend from under the rings l and are adapted to hook into eyes 19 eut in the under sides ot the tubes 2 and 3 as means tor lockingr the tubes in extended position. From the above description it is thought the operation of the apparatus is obvious.

lVhile l have herein described a certain specific method of constructing` and assembling the elements of my invention, it is understood same may be varied in minor details, not departing' from the spirit of my invent-ion as deiined inthe appended claims.

I claim:

1. An extensible rod, comprising a plurality of longitudinally slotted and telescopically connected tubes; rings over the teleseopingl ends ot the tubes, said rings having` lugs slidinlqfly engaging the slots ot the tubes. so as to hold the joints in alignment; a locking;` cam pivoted to the lug of the large handle tube; a bar pivoted to the cam and extending' baclrwithin the tube; means tor normally pressing` the bar outwrrd against the cam; and means 'tor manipula tine; the bar within the tube.

2. An extensible rod, comjnisine; a plurality ot longitudinally slotted and telescopically connected tubes; rings over the telescoping ends of the tubes, said rings havingy lugs slidingly engaging the slots of the tubes, so as to hold the joints in alignment; a locking cam piyoted to the lug' ot the large handletube; a bar pivoted tothe cam and extended back within the tube; means for normally pressing the bar outward against the cam; means for manipulating' the bar within the tube; and means tor releasably locking the joints in extended relation.

GEORGE F. BUHL. lVitnesses WILLIAM A. RoHLoFF, PAUL l/VALTERMIRE. 

